DIBBETS, Jan. 11.6. 1972.

(Amsterdam): art & project, 1975.  First edition.  Softcover.  29.6cm by 31cm.  [4]-pages. Issued as bulletin 56, art & project’s renowned series that played a pivotal role in disseminating conceptual art throughout Europe during the 1970s.​ Illustrated with two photographic images and a diagram by the artists.  This a very good example, addressed and creased where folded for posting although not actually mailed.